Sewing-machine.



R. L. LYONS, H. W MORRIS & C. NIELSEN.

SEWING MACHINE.

, APPLICATION FILED MAR. 16. 19x4.

fivvfnions. R

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entrain snares rarnnr cannon ROBERT L. LYONS, OF WALTI-IAM, HAROLD W.MORRIS, 0F ROXBURY, AND CARL I. NIELSEN, -OF ARLINGTON, MASSACHUSETTS,ASSIGNQRS TO- FREDERICK OSANN COMPANY, OF NEW YORK, N. Y., A CORPORATIONOF NEW YORK;

SEWING-MACHINE.

iasaeia.

Specification of Letters Patent.

Patented Jan. 15, itfi i Application filed March 16,1914. Serial No.824,873.

To all whom} it may concern. 7

Be it known that we, ROBERT L. LYoNs, of WValtham, in the county ofMiddlesex, I-TAROLD V. Momns, of Roxbury, in the county of Suffolk, andCARL I. NIELSEN, of Arlington, in said county of Middlesex, all in theState of Massachusetts, have invented certain new and usefulImprovements in Sewing-Machines, of'wliich the following is aspecification, reference being had to the accompanying drawings, formingpart thereof: 9

This invention has reference to improvements in sewing machines andparticularly to such machines as are adapted to attach by sewingstitches tags or other flat devices to a fabric. V

The object of theinvention is to so construct asewing machine,particularly a singlethread sewing machine, that a tag or other flatarticle may be attached to afabric by a group of stitches, that therelative movement of the work withrespect to the stitch forming devicesmay be arrested during the's'ewingof one or more tying stitches and thatthe sewing threadmay b'e strained to break saidthread.

Other objects of the invention are to facilitate the operation of thevarious parts of the machine as, for instance,the release and return ofthe lifter plate to its normal position.

The'invention consistsin the novel means for" liftingthe work to strainthe thread;

The invention also consists in such other novel features cinema-actionandcombinations of parts as shall hereinafter be more rod from releasemovement.

fabric a having the tag 6 attached to said fabric by the sewing stitchesc, c.

Fig. 6, represents adetail view of the camfor holding the thread clampactuating Similar characters of reference"designate corresponding partsthroughout;

WVe are awarethat buttons have beenattached to fabric bygroups ofstitchesand that, after the formation of tying stitches, said button andits attached fabric has been lifted to strain and break the thread. Insuch operation the button has such stability that it is engaged by thearms of a button clamp and the lifting of the work to eflect thebreaking of the thread is accomplished by the swinging upward of thearms of the button clamp. In carrying our present invention intopractice the tagor flat article which is to be attached to the fabrichas neither the shape nor the stability to be engaged by a liftingdevice adapted to apply sufiicient strain to effect the breaking of thesewing thread; The tag referred to herein is often of paper or ofcomparatively thin cloth and is therefore not adapt ed to resist anysevere strain. e therefore find that it is desirable and often necessaryto effect the straining of the thread by lifting the under fabric bymeans of a cloth plate against which said under fabric rests during thesewing operation. This preferred means of lifting the work to strain thethread usually requires the return of the'cloth plate to normalposition, toreceive the work, beforethe presser foot is returned to itsnormalposition to bear on the work.

In order to morefully describe the new improvement reference isnow madeto the drawing in which 10 represents the bed plate of a sewing machinehaving the standard 11 furnished with the arm 12 havingthe head 13 bywhichhead 13 operatively sustains the needle bar 14 which, with-its Themeans for operating the needle mechanism and the looper mechanism may beof any known construction and does not necessarily form part of thepresent mvention.

The frame arm 12 has the thread tensions 16 and 17, the posts 18*and 19and the in theother direction by'the slide "rod which 1s shdable 1n theguide 12 and has the pin members 23 and 2st. The lower end of said sliderod 22 is in position to be acted upon by the r1se25of cam'26 whichlatter is adapted to be rotated by the driv-v ing mechanism of themachine, in any known manner. and has a. cam or path 27 of any knownshape to effect the vibration of the follower, 28, engagedjwith saidcam, during a period in the rotation of said cam 26 and to arrest suchvibration during another period in the rotation of-said cam26 as is-wellknown. 3 i T On the base plate 10 is movably'mounted a work holderhaving the post 29- and the forwardly extending member 30 which latterhas the hinged cloth plate 31 extending forward to the path of theneedle and having a slot which is in registry withslot of presser member33 which latter has spurs at:

its under side and. is carried by arm 34 pivotally mounted on said post29. Cloth plate 31 hasalso the guide 35 with which the for- 21rd end ofthe lifter arm 36 is slidably engaged, the rear end of this arm 36 beingpivotally mounted on the post'37 which in.

turn is niountedon the bed plate 10.

In bearing'members 38, 39 carried respe'c tively by the arm 12 and head13 is jour'naled. the shaft lO'havingthe arnreil whichiaian isadapted'to be swung by the actuation-of its connection 42 to effect therocking of said shaft 10 and the swinging of its thread puller arms 4-3and 44: the former of which, (43) is located back of the thread clamp(19 21) to pullthread T through the tensions 1 6 and 17 when the threadis clamped by said thread clamp to provide loose thread for the nextsewing operation, after the thread has been releasedmby said threadclamp. Thread pullcrarm 4'4; is free on said shaft and has'the finger45andzthe depending member dwhich latter has the? drawing spring 47,attached to arm 12, and tending constantly, to draw'this member 16toward the machine arm 12 and to swing outward the upper end of saidthread puller arm 44 to take up slack thread between. the, thread-clampand the w0'rk. The outward sw ng ng of sa1d thread puller 414 undertheaction of spring17 is limited by thestop' is fined onthemachme arm 12and cooperating wlth the finger 15 of puller 4:41Vhll the Said pivotedarm 21 to the peripheral portion of said cam as 1 shown in Fig. 6 andissustained thereby to hold the thread clamp member2l in the closedposition, In starting a new sewing operation the primary movement of thework holder causes the rear end of itslmem ber 34 to strike pin 21 ofsaid rod 22 where'- bysaid rod is partially rotated and its pin 23 isreleased from the periphery of said cam 50 and is permitted, bythesha-pe of 'said' cam, to move downward thus releasing thread clampmember 21 from the closing action of rod 22 and permitting the spring ofsaid member 21- to act to open 'thcthread clamp. V. I

Mounted on shaft 40 is thearnrfijl with.

which is pi votally connected the lifter, rod,

52 having the cam Y53 and, at or near its lower end, the engaging member54-.QThis lifter 130C152 is drawn towardflthe machine arm-12 bythespring 55 and said-arm 12, is provided with the cam 56 which initheupward movement of rod 52 acts against cam 53 of said'rod and forcessaid rod-to-swing outward whereby the, member 51 thereofyiscaused tomove outward, from the, position shown in Fig. 2, sufficiently torelease the; lifter a m 36 whereby said arm '36 andlts vcloth plate 31may fall back topositio'n on the bed'plate irrespective of the-positionof the presser arm 34 which latter is raised by l-Vith parts in positionshown inaFigi; 1

1 05 its connection 57 with the arm 58 Ofshaftifl. 1

it is necessary to raise the presser foot 33 in order to introduce theclothfor fabric the cloth plate 31. This is preferablylac- 'complishedby manuallyfactuating thcfcon ,nection 41-2 of .arm 11 whereby shaft40Ris partiallyrotated and arm "58 is swun :toj draw up said presserfoot 33, by means ofthe 7 connection 57 At the same. time the block ormember 5 1; engages and. draws up the lifter arm 36-and the cloth plate31 isthus raised until-the a cam i 53 ofrod '52 rides agamst cam 56 and1s, by sa dicamq56,

forced outward 'sufliciently toq-rdisengage member 54 from the lifterarm 136 tlius;,per-

mitting said arm 36 and plate 31 tofdrop,

back to a position where plate 31 is spaced from presser foot.33.

The material a with its tag I) is nowiin sorted between plate '31; and,presser foot and the connection 42 18 released to pernnt the retractiverotation of shaft 40- and the downward movement of the presser foot; 33

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whereby the material to and tag Z) are en- 'gaged bvt'he spurs on saidpresser foot and clothplate as is indicated in Fig. 1.

1th the material a and tag Z) in position, asqust above descrlbed, themachine 1s operated and a group of stitches is sewn through a and b andat or about the completion of said group of stitches therelativemovementbetweenthe work and the needle is arrested, by cam 26, in theusual manner and one or more tying stitches is formed.

The automatic stopping of the machine is timed with relationjtotheformation of said tying stitch or stitches an d, preceding saidstopping, -the rise *of said cam 26 acts on the slide rod'22 to raisesaid rod and to thereby move thread clamp member 21 against the actionof its spring to the closed position whereby thread T is clamped orengaged between members 21 and 19 so that the forward movement of thethread is re sisted. 1

Connection 12 is now actuated or effected to rock or partiallv rotateshaft 10 and as a result of said partial rotation several operationsoccur, the sequence of which occurrence depends somewhat upon therelative positions and dimensions of the members carried by or actuatedby the rotative movement of said shaft 40. Cam acts on pin 23 of rod 22and effects the swinging of said pin on to the periphery of said cam 50whereby said rod 22 is held in position to resist the opening movementof thread clamp member 21. Thread puller arm 43 is swung to draw threadthrough the tensions 16 and 17 or through one of said tensions if oneonly be used. Thread puller arm actuator 49 is moved vor swung outwardto permit spring +17 to swing thread puller arm 44 to take up slackthread between the thread clamp (19, 21) and the tying stitch at thework. Arm 58 is swung to draw upward presser foot arm 34 by means of theconnection 57. Arm 51 is swung to draw up rod 52 which acts, through itsmember 5 1 on the lifter arm 36 to effect the lifting of the cloth plate31 whereby the work is lifted and a strain is put upon the thread T tobreak said thread, the break occurring at the tying stitch.

Before the upward movement of rod 52 is completed its cam 53 ridesagainst cam 56 and cam 53 and its rod 52 is caused to swing outwardwhereby the member 54 of said rod 52 is disengaged from lifter rod 36and said rod and its cloth plate 31 are caused to move downward undergravity or by the assistance of the spring of said rod 36. By thusreturning cloth plate 31 to normal position said plate 31 is spaced frompresser foot 33 so that work may readily be placed between these parts.

When connection 12 is permitted to move upward shaft 410 is retractivelyrocked 1 whereby thread puller arm 43 is swung backward out of the wayof the thread. Actuator arm 19 actsto effect the backward swingingofthread puller arm 1-1. Arm 58 in its movement permits the downwardmovement of presser foot arm 31, and arm 51 permits rod 52 to movedownward until its member-5i rides against lifter ar-111 36 and thusbecome engaged beneath said arm 36as indicated in Fig. 3, thisengagingmovement, laterally, of rod 52 and its member resulting from the actionof spring I Nhen the 'machine is again started the rear portion ofpresser foot arm 3%, in making its first vibratory movement, strikes pin2% of rod 22 and causes said pin to swing whereby rod 22 is partiallyrotated to bring its pin 22 into the position shown in Fig. 1 where saidpin 23 may be received in the groove of cam 50 to permit the downwardmovement of said rod 22 and the opening movement of thread clamp member21 under action of its spring.

It is not our intention hereby to limit our invention to the specificfeatures of construction herein shown or to the relative operation ofsome of the parts but only as herein claimed.

Having thus described our invention we claim as new and desire to secureby Letters Patent:

1. A sewing machine comprising stitch forming means to form a group ofstitches and a tying stitch and including a work holder for effectingrelative movement between the work and the needle, said work holderhaving a presser foot and a cloth sustaining plate, means adapted to beoperated to resist the movement of the thread, and means for operatingsaid cloth plate to move the work and thus to break the thread.

2. A sewing machine comprising stitch forming means and a work holdercooperating to form a group of stitches and a tying stitch, said workholder having a cloth sustaining member mounted on said work holder andmovable relative to such holder, means for moving said member, and meansfor resisting the feeding movement of the thread at times to break thethread.

3. A sewing machine comprising stitch forming means and a work holdercooperating to form a group of stitches and a tying stitch, said workholder having a member engaged beneath the work for moving the work,means for operating said member to lift the work, a thread clamp, meansfor taking up the slack thread between said clamp and the stitch formingmeans, and means for o )erating said thread clamp and take up wherebythread may be broken.

4. A sewing machine comprising a work holder having a presser foot and acloth sustaining member mounted for independent movement, means formoving said presser mechanism for moving both said presser foot andsustaining member in one direction approximately simultaneously and forpermit- 1 ting the return of the sustaining member to its normal,position lndependently of the presser foot.

6. A sewing machine comprising cooperating means for forming a group ofstitches and a tying stitch and including a member movable independentlyof the presser foot in a direction to draw the thread, means 10- Gopiesof this patent may be obtained for catcd-above the stitch formingdevices for resisting the movement of-the thread, and meaiis for movingsaid member to strain and break the thread.

7. A sewing machine comprising a work holder having a presser foot and awork carrying member both pivotally mounted for relative upwardmovement, a lifter rod pivotally mounted on a member independent of saidwork holder and releasably engaged with said work carrying member, meansfor moving upward said'lifter rod, and means for moving upwardsaid-presser foot.

ROBERT L. LYONS.

HAROLD W. MORRIS. CARL I. NIELSEN.

\Vitnesses HENRY J. MILLER, v ESTHER ,C. MU PHY.

five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

